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| Number | Title | Issue Date |
| 4477367 | Crystalline 2-layer lithium-hydroxy aluminates Crystalline 2-layer LiOH.2Al(OH)3.nH.sub.2 O, preferably supported by a porous substrate, is prepared by treating crystalline 2-layer LiX.2Al(OH)3.nH.sub.2 O, where X is anion, with a LiOH solution or other hydroxide ion source. The ... | 10/16/1984 |
| 4472362 | Regeneration of crystalline lithium aluminates Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about ... | 09/18/1984 |
| 4461714 | Method of making crystalline 2-layer lithium aluminates in ion exchange resins The bayerite form of crystalline alumina, Al(OH)3, contained within a macroporous ion exchange resin is converted to the gibbsite form of Al(OH)3 by reaction with hot MgX2, where X is halide, followed by water-washing the ... | 07/24/1984 |
| 4434241 | Catalyst recovery process from tar from carbonylation reactions The present invention provides a process for the recovery of rhodium, lithium, and iodine values from tar which is generated during carbonylation reactions. The process comprises sequentially extracting the tar with water and then leaching the remaining t... | 02/28/1984 |
| 4430311 | Alumina compounds in ion exchange resins Formation of hydrous alumina in the reticules of a weak-base anion exchange resin, wherein AlCl3 has been precipitated as hydrous alumina by reaction with ammonia, is improved by employing a subsequent treatment with HCl or with NH4 ... | 02/07/1984 |
| 4411971 | Lithium compounds This invention relates to lithium compounds composed of a lithium halide and lithium imide. The compounds are high in lithium ionic conductivity and are used as solid electrolytes. Particularly excellent ones of the lithium compounds are those represented... | 10/25/1983 |
| 4376100 | Lithium halide brine purification A resin/aluminate composite which has been substantially loaded with Li+ values by being contacted with a contaminated, Li+ -containing aqueous solution, is pre-washed with a substantially pure, concentrated NaCl brine to remove the ... | 03/08/1983 |
| 4348296 | Crystalline lithium aluminates Porous substrates containing seeds of hydrous crystalline alumina are contacted with an aqueous solution of alkaline aluminate, thereby causing additional crystalline hydrous alumina to grow on the seeds within the pores of the substrate.... | 09/07/1982 |
| 4348297 | Crystalline lithium aluminates Crystalline LiOH.2Al(OH3.nH.sub.2 O is reacted in aqueous solution with anions (A) having a valence of 1, 2, or 3 to form novel lithium aluminates conforming substantially to the empirical formula where n is the number of waters of hydration, y is t... | 09/07/1982 |
| 4348295 | Crystalline lithium aluminates Crystalline hydrous aluminas, Al(OH)3, are reacted with LiX, where X is anion, under appropriate conditions to prepare crystalline compounds conforming substantially to the empirical formula where X is anion and nH2 O represents waters of... | 09/07/1982 |
| 4347327 | Recovery of lithium from brines An anion exchange resin, containing Al(OH)3 suspended therein, is reacted with aq. LiOH to form microcrystalline LiOH.2Al(OH)3 which is then reacted with a halogen acid or halide salt to form microcrystalline LiX.2Al(OH)3.... | 08/31/1982 |
| 4320105 | Pellitizing method A method of agglomerating materials such as lithium carbonate into pellets of a desired size utilizing water to achieve initial agglomeration of the particles comprising the materials. The initially formed pellets are subjected to drying to provide hard, ... | 03/16/1982 |
| 4307066 | Extraction of metals from mixtures of oxides or silicates Metals are extracted from mixtures of oxides or silicates by reacting the mixture at elevated temperature with a gaseous chlorinating agent comprising a mixture of water vapor and hydrogen chloride to selectively chlorinate the desired metal or metals.... | 12/22/1981 |
| 4291001 | Recovery of lithium from brine Improvements are made in the process wherein Li+ values are recovered from dilute aqueous solution by the use of an anion exchange resin composite containing crystalline LiX.2Al(OH)3, where X is halide. The improvements derive from e... | 09/22/1981 |
| 4287163 | Process for recovering lithium from brine by salting out lithium sulfate monohydrate A salting-out process for recovering lithium from brines which have been concentrated by solar or thermal evaporation. Soluble sulfate salts are added to the strong brine solutions containing lithium to yield lithium sulfate monohydrate. Subsequent treatm... | 09/01/1981 |
| 4285914 | Recovery of lithium from low-grade ores Lithium is recovered from low-grade ores, such as clays, by addition of CaO or CaCO3 and chlorination with H2 O-HCl vapor to convert the lithium to soluble LiCl.... | 08/25/1981 |
| 4274834 | Process for purification of lithium chloride Lithium chloride containing small amounts of inorganic and/or organic impurities is purified by heating the lithium chloride above about 200° C., cooling the compound to ambient temperatures and extracting it with isopropanol, separating the liquid and s... | 06/23/1981 |
| 4271131 | Production of highly pure lithium chloride from impure brines Highly pure lithium chloride suitable for use in production of lithium metal by electrolysis is obtained directly from impure natural or other lithium chloride brines by an integrated process in which the brine is first concentrated by solar energy to a l... | 06/02/1981 |
| 4261960 | Removal of boron from lithium chloride brine Boron, as well as magnesium and sulfate impurities, are removed from or at least substantially reduced in a lithium containing brine to minimize lithium losses on further concentration of the brine by adding to the brine an aqueous slurry of slaked lime a... | 04/14/1981 |
| 4251338 | Electrolytic recovery of lithium from brines Disclosed is a method of recovering lithium ion from a lithium-containing solution by electrolyzing the solution between a cathode and an aluminum anode.... | 02/17/1981 |
| 4243641 | Method for recovering lithium from sea water A process for recovering lithium from sea water in which sea water is repeatedly concentrated at specific gravities between 1.13 and 1.24 to thereby separate salts including common salt from the concentrate, removing the salts which separate from the conc... | 01/06/1981 |
| 4243392 | Process for solar concentration of lithium chloride brine By evaporation employing solar energy, a brine having a lithium chloride concentration greater than that of a brine whose vapor pressure under ambient conditions is substantially equal to the partial pressure of moisture in the atmosphere above the brine ... | 01/06/1981 |
| 4221767 | Recovery of lithium from brines An anion exchange resin, containing Al(OH)3 suspended therein, is reacted with aq. LiOH to form microcrystalline LiOH.2Al(OH)3 which is then reacted with a halogen acid or halide salt to form microcrystalline LiX.2Al(OH)3.... | 09/09/1980 |
| 4207297 | Process for producing high purity lithium carbonate A continuous integrated process for the production of lithium hyroxide monohydrate and high purity lithium carbonate of large average particle size comprising converting impure lithium carbonate to lithium hydroxide by a causticization step, separating pr... | 06/10/1980 |
| 4169808 | Haloorganometallic lithium salt complex compositions and electrolyte compositions containing these Novel compositions are described which comprise halogenated organometallic lithium salt complexes having the formula LiMRn Xi wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, In, Tl, Sn (stannous), P and ... | 10/02/1979 |
| 4164069 | Method of preparing a positive electrode for an electrochemical cell A method of preparing an electrochemical cell including a metal sulfide as the positive electrode reactant and lithium alloy as the negative electrochemical reactant with an alkali metal, molten salt electrolyte is disclosed which permits the assembly to ... | 08/14/1979 |
| 4159311 | Recovery of lithium from brines Lithium is preferentially extracted from brine containing Li salts along with salts of other metals, e.g. Na, Ca, Mg, K, and/or B, by contacting the brine with a particulate anion exchange resin having suspended therein a microcrystalline form of LiX... | 06/26/1979 |
| 4126666 | Process for producing high purity lithium sulfide Lithium sulfide in the form of a finely divided, free-flowing powder of high purity is produced by reacting lithium carbonate powder in which the diameter of the particles is in the range of 1 to 10 microns with hydrogen sulfide at 500° to 700° C. Initi... | 11/21/1978 |
| 4124684 | Continuous production of lithium carbonate Lithium carbonate is derived from a calcined lithium-bearing silicate in a continuous cyclic process in which the silicate is decomposed in aqueous medium with sodium carbonate at a selected temperature and pressure, the resulting slurry is cooled and lea... | 11/07/1978 |
| 4116858 | Recovery of lithium from brines Lithium is preferentially extracted from brine containing Li salts along with salts of other metals, e.g. Na, Ca, Mg, K, and/or B, by contacting the brine with a particulate anion exchange resin having suspended therein a microcrystalline form of LiX.2Al(... | 09/26/1978 |
| 4116856 | Recovery of lithium from brines An anion exchange resin, containing Al(OH)3 suspended therein, is reacted with aq. LiOH to form microcrystalline LiOH.2Al(OH)3 which is then reacted with a halogen acid or halide salt to form microcrystalline LiX.2Al(OH)3.... | 09/26/1978 |
| 4116857 | Recovery of Mg++ from brines Magnesium values are selectively recovered from salt brines, even salt brines which contain competing ions such as Li+, Ca++, and Sr++, by contacting the brine with an anion exchange resin which has dispersed therein a mic... | 09/26/1978 |
